Cita APA (7th ed.)

Babbie, E. (2007). The Practice of Social Research (11th ed.). Wadsworth, Cengage Learning.

Cita Chicago (17th ed.)

Babbie, Earl. The Practice of Social Research. 11th ed. Belmont, CA: Wadsworth, Cengage Learning, 2007.

Cita MLA (9th ed.)

Babbie, Earl. The Practice of Social Research. 11th ed. Wadsworth, Cengage Learning, 2007.